CN218896353U

CN218896353U - Touch display screen module fixing structure

Info

Publication number: CN218896353U
Application number: CN202222756796.6U
Authority: CN
Inventors: 吴志党
Original assignee: Huizhou Desay SV Automotive Co Ltd
Current assignee: Huizhou Desay SV Automotive Co Ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-04-21
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a touch display screen module fixing structure, which comprises a decoration panel, wherein a decoration panel groove with an upward opening is formed in the decoration panel, and the top edge of the decoration panel groove is provided with a support step with an upper side and an inner side which are openings; the touch display screen module comprises a touch screen and a display screen, wherein the touch screen is fixed above the display screen, and the edge of the touch screen is larger than the edge of the display screen; the touch screen is arranged above the supporting step, the bottom of the edge of the touch screen is fixedly bonded with the bottom of the supporting step through a first adhesive tape, and the bottom of the edge of the display screen is fixedly bonded with the bottom of the decorative panel groove through a second adhesive tape or glue. The utility model has reasonable structural design, and the black edge of the touch screen can be smaller in size by adopting the scheme, so that the black edge of the touch display screen module can be smaller.

Description

Touch display screen module fixing structure

Technical Field

The utility model relates to the technical field of touch display screen module fixing, in particular to a touch display screen module fixing structure.

Background

With the rapid development of intelligent automobiles, people and vehicles interaction experience is increasingly emphasized, automobile cabin electronics are taken as important inlets for people and vehicles interaction, and the product forms in the future are greatly changed. The touch display screen is an important carrier for human-vehicle interaction.

The display screen used by the automobile cabin is larger and larger in size, and the display screen is a 7inch display screen and an 8inch display screen several years ago; in recent years, the display screen gradually evolves into a 10.25inch display screen and a 12.3inch display screen; the future also moves towards duplex displays, triple displays. On the other hand, the bonding mode of the display screen (TFT) and the touch screen (TP) is also gradually developed from the original frame bonding (also called as mouth glue bonding, an air layer exists between the TFT and the TP) towards the full bonding process (the TFT and the TP are bonded together in a seamless mode by OCR (optical character recognition) water glue or OCA (optical character recognition) optical glue), and the air layer does not exist in the middle. Compared with the frame paste, the full-lamination can provide better display effect, lower reflectivity and more transparent screen, so the full-lamination type display screen is widely used on a vehicle. After the TFT and TP form a touch display screen module by a full-lamination process, the TFT and TP are required to be connected and fixed with a decoration panel so as to be embedded into different mounting positions of a center console or an automobile interior. Conventional touch display screen modules often adopt adhesive tapes (such as 3M VHB adhesive tape, VST adhesive tape, tesa adhesive tape, etc.) to connect and fix TP and the decorative panel, when the larger the size of the display screen is, the more the number of the display screen is, which means that the weight of the display screen is increased, and the more the area of the used adhesive tape is, which causes the outer edge of the touch screen to be enlarged, as shown in table 1, the inch and weight tables of different touch display screen modules are obtained.

Touch display screen module	7inch	8inch	10.25inch	12.3inch
					Weight of (E)	About 280g	About 330g	About 545g	About 670g

TABLE 1

As shown in fig. 1-2, the fixing scheme of the conventional full-lamination touch display screen module mainly comprises: the novel touch screen comprises 7 parts, namely an existing touch screen (1), an existing display screen (2), an existing adhesive tape (3), an existing decoration panel (4), an existing driving PCB (5), an existing mounting bracket (6) and an existing bracket fixing screw (7). The current touch display module assembly that laminates entirely comprises current touch-sensitive screen (1), current display screen (2), has inherited the fixed scheme that touch-sensitive screen and display screen frame pasted when the connection of current touch-sensitive display module assembly and current decoration panel (4) is fixed entirely, all pastes with the sticky tape, and the difference is that touch-sensitive display screen module assembly weight of laminating entirely is heavier than when the frame pastes, so needs more sticky tape quantity.

Technical problems (technical drawbacks) existing in the above background art:

1. the most main and critical technical problems are as follows: the full-lamination touch display screen module is heavy, and the adhesive tape needs to provide higher adhesion force and larger adhesion area to be reliably connected with the decoration panel, and can pass through reliability experiments related to the vehicle-mounted screen, such as high-low temperature work, high-temperature high-humidity experiments, vibration experiments, 100g impact experiments and the like, and the experiments test that the adhesive tape needs to bear stress, shearing force, impact force and the like. The larger adhesive tape adhering area means that the touch screen appearance is expanded by a larger size than the display screen appearance, and the touch screen appearance becomes larger, so that the black edge of the touch screen becomes larger. However, the host factories and car owners always want the touch screen to be narrower and better, similar to the narrow bezel requirement of mobile phones, so that the screen display area ratio will be increased.

As shown in fig. 3, the conventional display (2) is mainly composed of a central display active area (21) and a peripheral display peripheral area (22), and the external dimension (TFT 0D) minus the active area dimension (TFT AA) is referred to herein as the black edge size of the TFT. When the touch screen is attached to the display screen to be changed into a touch display screen module, in order to attach the module to the decoration panel, the traditional scheme is to expand the area for attaching the adhesive tape on the basis of the appearance of the display screen, as shown in fig. 4-6, the existing touch screen (1) mainly comprises a middle touch screen visible area (11) and a peripheral touch screen black area (12), and the appearance size (TP 0D) minus the visible area (TP VA) is the black size of the touch screen, and the size is the black size of the touch display screen module; wherein fig. 6 also shows the touch screen back portion (13), the display screen back portion (23).

When the touch screen display area (TP VA) and the display screen activation area (TFT AA) are designed to be symmetrical in center, and |TP VA-TFT AA|/2=0-1 mm; considering the tolerance of the adhesive tape when the adhesive tape is assembled with the touch display screen module and the decoration panel, the adhesive tape is expanded by 0.3-1.0 mm outside the appearance of the display screen and contracted by 0.3-1.0 mm inside the appearance of the touch screen; therefore, the black edge size of the touch display screen module is approximately equal to the black edge of the display screen and the width of the adhesive tape, the assembly tolerance of the difference value between TP VA and TFT AA and the assembly tolerance of the adhesive tape are ignored, and the black edge sizes of the touch display screen module, namely the upper, lower, left and right black edge sizes of the touch display screen module can be obtained by adding the black edge of the display screen at the corresponding position and the width size of the adhesive tape. The width of the tape was determined by the weight of the different touch display modules, and the table of inches and weights for the different touch display modules and the tape width is shown in table 2.

Touch display screen module	7inch	8inch	10.25inch	12.3inch
					Weight of (E)	About 280g	About 330g	About 545g	About 670g
Width of adhesive tape	About 4mm	About 6mm	About 9mm	About 12mm

TABLE 2

2. Secondary problems: because the black edge of the display screen is basically designed by the display screen panel factory, the black edge of the display screen is determined corresponding to the OEM factory designed by the host factory when a certain display screen is selected, and in order to reduce the black edge size of the module after the final touch screen is attached to the display screen, and through various vehicle-mounted screen related reliability experiments, a new touch display screen module fixing scheme is needed.

The most main and critical technical problems are that the difference value between TP VA and TFT AA and the assembly tolerance of the adhesive tape are adjusted to play a small role on the black edge size of the touch display screen module, and the adhesive tape is required to be canceled or the width of the adhesive tape is reduced to reduce the black edge size to the maximum extent, so that the stress of the touch display screen module is completely or partially decomposed to other parts.

Disclosure of Invention

The utility model aims to provide a touch display screen module fixing structure so as to reduce the black edge size of a touch display screen module.

In order to achieve the above purpose, the technical scheme of the utility model provides a touch display screen module fixing structure, which comprises a decoration panel, wherein a decoration panel groove with an upward opening is arranged in the decoration panel, and the top edge of the decoration panel groove is provided with a support step with an upper side and an inner side being the opening; the touch display screen module comprises a touch screen and a display screen, wherein the touch screen is fixed above the display screen, and the edge of the touch screen is larger than the edge of the display screen; the touch screen is arranged above the supporting step, the bottom of the edge of the touch screen is fixedly bonded with the bottom of the supporting step through a first adhesive tape, and the bottom of the edge of the display screen is fixedly bonded with the bottom of the decorative panel groove through a second adhesive tape or glue.

Further, a driving PCB is arranged below the decoration panel and is electrically connected with the touch display screen module.

Further, a mounting bracket is arranged below the driving PCB, and the edge of the mounting bracket is fixedly connected with the decoration panel through a bracket fixing screw.

Further, the length of the first adhesive tape extends along the edge direction of the touch screen, and the width of the first adhesive tape is set to be 3-5 mm; the first adhesive tape is one of a 3M VHB adhesive tape, a VST adhesive tape and a TESA adhesive tape.

Further, the second tape is one of a 3M VHB tape, a VST tape, and a TESA tape.

Further, the glue is one of a rubber solvent glue and a two-component structural glue.

Further, the rubber solvent adhesive is set as 3M 4799, and the two-component structural adhesive is set as 3M DP110 epoxy adhesive.

Further, the touch screen and the display screen are in full fit.

Further, the top edge of supporting step is equipped with upside and inboard for open-ended first spacing step, the edge bottom of touch-sensitive screen is equipped with downside and outside for open-ended second spacing step, the spacing cooperation of second spacing step and first spacing step.

Further, the decoration panel is set to be a plastic decoration panel or a hardware decoration panel.

In summary, the technical scheme of the utility model has the following beneficial effects: the touch screen is arranged above the supporting step, the edge bottom of the touch screen is fixedly bonded with the bottom of the supporting step through the first adhesive tape, and the edge bottom of the display screen is fixedly bonded with the bottom of the decorative panel groove through the second adhesive tape or glue, so that the width of the first adhesive tape on the touch screen can be firstly fixed no matter how large the screen of the display screen is, the first adhesive tape on the touch screen is recommended to be 3-5 mm, and then the adhesive tape or glue consumption on the display screen is increased, so that the fixing effect of the touch display screen module is finally achieved. According to the analysis, compared with the adhesive tape width of 4-12 mm in the prior art, the first adhesive tape width is only 3-5 mm, so that the black edge size of the touch display screen module is approximately equal to the black edge of the display screen, the adhesive tape width is approximately equal to the black edge of the display screen, and the black edge of the display screen is approximately equal to the black edge of the display screen, and the black edge of the touch display screen can be smaller by adopting the scheme, and the black edge size of the touch display screen module can be smaller.

Drawings

FIG. 1 is a schematic diagram of an exploded construction of the prior art;

FIG. 2 is a schematic cross-sectional view of a prior art;

FIG. 3 is a schematic diagram of a prior art display screen;

FIG. 4 is a schematic diagram of a prior art touch screen;

FIG. 5 is a schematic side view of a prior art touch display module;

FIG. 6 is a schematic diagram of a back structure of a touch display module of the prior art;

FIG. 7 is a schematic cross-sectional view of the present utility model;

reference numerals illustrate: 1-existing touch screen, 11-touch screen visible area, 12-touch screen black area, 13-touch screen back part, 2-existing display screen, 21-display screen active area, 22-display screen peripheral area, 23-display screen back part, 3-existing adhesive tape, 4-existing decoration panel, 5-existing driving PCB board, 6-existing mounting bracket and 7-existing bracket fixing screw.

10-touch screen, 101-second spacing step, 20-display screen, 30-first sticky tape, 40-decoration panel, 401-decoration panel recess, 402-support step, 403-first spacing step, 50-drive PCB board, 60-installing support, 70-support set screw, 80-second sticky tape, 90-glue.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, but the scope of protection of the present utility model is not limited.

In the present utility model, for a clearer description, the following description is made: the observer views fig. 7, where the left side of the observer is left, the right side of the observer is right, the front of the observer is front, the rear of the observer is rear, the upper side of the observer is upper, and the lower side of the observer is lower, it should be noted that the terms "front end", "rear end", "left side", "right side", "middle part", "upper" and "lower" in this text indicate orientations or positional relationships based on the orientations or positional relationships set forth in the drawings, and are merely for convenience in clearly describing the present utility model, and do not indicate or imply that the structures or components to be referred to must have specific orientations, be configured in specific orientations, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," "fourth" and the like are used for clarity or to simplify the description, and are not to be construed as indicating or implying a relative importance or quantity.

Referring to fig. 7, the present embodiment provides a touch display screen module fixing structure, which includes a decoration panel 40, wherein a decoration panel groove 401 with an opening facing upwards is provided in the decoration panel 40, and a supporting step 402 with an upper side and an inner side being an opening is provided at a top edge of the decoration panel groove 401; a touch display screen module is arranged in the decoration panel groove 401, the touch display screen module comprises a touch screen 10 and a display screen 20, the touch screen 10 is fixed above the display screen 20, and the edge of the touch screen 10 is larger than the edge of the display screen 20; the touch screen 10 is arranged above the supporting step 402, the bottom of the edge of the touch screen 10 and the bottom of the supporting step 402 are adhered and fixed through the first adhesive tape 30, and the bottom of the edge of the display screen 20 and the bottom of the decorative panel groove 401 are adhered and fixed through the second adhesive tape 80 or the glue 90. The function is as follows: the touch screen is arranged above the supporting step, the bottom of the edge of the touch screen is fixedly bonded with the bottom of the supporting step through the first adhesive tape, and the bottom of the edge of the display screen is fixedly bonded with the bottom of the decorative panel groove through the second adhesive tape or glue, so that the width of the first adhesive tape on the touch screen can be firstly fixed no matter how large the screen of the display screen is, the width of the first adhesive tape on the touch screen is recommended to be 3-5 mm, and the use amount of the adhesive tape or the glue on the display screen is increased, so that the fixing effect of the touch display screen module is finally achieved. According to the analysis, compared with the adhesive tape width of 4-12 mm in the prior art, the first adhesive tape width is only 3-5 mm, so that the black edge size of the touch display screen module is approximately equal to the black edge of the display screen, the adhesive tape width is approximately equal to the black edge of the display screen, and the black edge of the display screen is approximately equal to the black edge of the display screen, and the black edge of the touch display screen can be smaller by adopting the scheme, and the black edge size of the touch display screen module can be smaller. In addition, the black edge of the touch screen is reduced, so that the whole size of the touch display screen module can be reduced.

Specifically, a driving PCB 50 is disposed under the decoration panel 40, and the driving PCB 50 is electrically connected with the touch display module. The function is as follows: the touch display screen module can be controlled by driving the PCB.

Specifically, a mounting bracket 60 is provided under the driving PCB 50, and an edge of the mounting bracket 60 is fixedly connected with the decoration panel 40 through a bracket fixing screw 70. The function is as follows: through the arrangement of the decoration panel and the mounting bracket, the final assembled complete machine can use the complete machine fixing screw to connect the mounting bracket with the automobile interior I P.

Specifically, the length of the first adhesive tape 30 extends along the edge direction of the touch screen 10, and the width of the first adhesive tape 30 is set to 3 to 5mm, which means that: the width better combines the fixing effect and the size of the black edge; the first tape 30 is one of a 3M VHB tape, a VST tape, and a TESA tape.

Specifically, the second tape 80 is one of a 3M VHB tape, a VST tape, and a TESA tape.

Specifically, the glue 90 is one of a rubber solvent glue and a two-component structural glue. The function is as follows: because the shearing strength of the adhesive tape is not high, about 1MPa, the shearing strength of the adhesive tape can be greatly improved by adopting the double-component glue with higher shearing strength and the PUR hot melt adhesive, and the shearing strength can reach about 7MPa or even higher.

Specifically, the rubber solvent adhesive is 3M 4799, and the two-component structural adhesive is 3M DP110 epoxy adhesive.

Specifically, the touch panel 10 and the display panel 20 are fully bonded to each other.

Specifically, the top edge of the supporting step 402 is provided with a first limiting step 403 with an upper side and an inner side being an opening, the bottom of the edge of the touch screen 10 is provided with a second limiting step 101 with a lower side and an outer side being an opening, and the second limiting step 101 is in limiting fit with the first limiting step 403. The function is as follows: the second limiting step is in limiting fit with the first limiting step, so that the positioning effect of the touch display screen module is enhanced.

Specifically, the decorative panel 40 is provided as a plastic decorative panel or a hardware decorative panel. The plastic cement veneer can be made of PC+ABS, PC+PET and the like, and the five-gold decorative veneer can be made of cast aluminum, magnesium aluminum alloy and the like.

The novel touch display screen module fixing scheme is used, the key steps are that the back of the display screen is fixed with the face groove, and compared with the conventional method that the touch screen is completely fixed with the decoration panel by using an adhesive tape in the same industry, the novel touch display screen module fixing scheme is more reliable in connection, and the design meeting the narrow black frame of a customer is provided.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.

Claims

1. The utility model provides a touch display screen module fixed knot constructs, includes decorative panel (40), its characterized in that: a decorative panel groove (401) with an upward opening is formed in the decorative panel (40), and a supporting step (402) with an upper side and an inner side being the opening is formed at the top edge of the decorative panel groove (401); a touch display screen module is arranged in the decoration panel groove (401), the touch display screen module comprises a touch screen (10) and a display screen (20), the touch screen (10) is fixed above the display screen (20), and the edge of the touch screen (10) is larger than the edge of the display screen (20); the touch screen (10) is arranged above the supporting step (402), the edge bottom of the touch screen (10) and the bottom of the supporting step (402) are fixedly bonded through a first adhesive tape (30), and the edge bottom of the display screen (20) and the bottom of the decorative panel groove (401) are fixedly bonded through a second adhesive tape (80) or glue (90).

2. The touch display screen module fixing structure according to claim 1, wherein: the lower part of the decoration panel (40) is provided with a drive PCB (50), and the drive PCB (50) is electrically connected with the touch display screen module.

3. The touch display screen module fixing structure according to claim 2, wherein: the lower part of the driving PCB (50) is provided with a mounting bracket (60), and the edge of the mounting bracket (60) is fixedly connected with the decoration panel (40) through a bracket fixing screw (70).

4. A touch display screen module fixing structure according to any one of claims 1 to 3, wherein: the length of the first adhesive tape (30) extends along the edge direction of the touch screen (10), and the width of the first adhesive tape (30) is set to be 3-5 mm; the first tape (30) is one of a 3M VHB tape, a VST tape and a TESA tape.

5. A touch display screen module fixing structure according to any one of claims 1 to 3, wherein: the second tape (80) is one of a 3M VHB tape, a VST tape and a TESA tape.

6. A touch display screen module fixing structure according to any one of claims 1 to 3, wherein: the glue (90) is one of rubber solvent glue and two-component structural glue.

7. The touch display screen module fixing structure according to claim 6, wherein: the rubber solvent adhesive is 3M 4799, and the two-component structural adhesive is 3M DP110 epoxy adhesive.

8. A touch display screen module fixing structure according to any one of claims 1 to 3, wherein: the touch screen (10) and the display screen (20) are fully attached.

9. A touch display screen module fixing structure according to any one of claims 1 to 3, wherein: the top edge of supporting step (402) is equipped with upside and inboard for open-ended first spacing step (403), the edge bottom of touch-sensitive screen (10) is equipped with downside and outside for open-ended second spacing step (101), spacing cooperation of second spacing step (101) and first spacing step (403).

10. A touch display screen module fixing structure according to any one of claims 1 to 3, wherein: the decoration panel (40) is set to be a plastic decoration panel or a hardware decoration panel.